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O. H. BIDWELL. Scale Beam.

Patented July 6,1880.

UNITED STATES PATENT OFFICEO CARL H. BIDWELL, OF BUFFALO, NEIV YORK,ASSIGNOR TO THE BUFFALO SCALE COMPANY,

SCALE- OF SAME PLACE.

BEAM.

SPECIFICATION forming part of Letters Patent No. 229,663, dated July 6,1880.

Application filed January 28, 1880.

To all whom it may concern: 7

Be it known that I, CARL H. BIDWELL, of

Buffalo, in the county of Erie and State of New York, have made certainImprovements in Poises and Beams of YVeighing-Scales, of

which the following is a specification.

This invention relates to single-beam scales, (though a second or tarebeam may be used, if desired,) the object being to get a greatly- IOincreased capacity from a single beam and to do away with loose poisesor weights, thus preventing their getting lost or mislaid, and to alwayshave them at hand just where wanted, and, finally, to do away withhaving several permanent poises on a single beam all the time, whichtakes away from its accuracy by destroying its sensitiveness, and theinvention consists in continuing the beam through the trig-loop, (theweighing-numbers ending at the loop,) the part extending beyond actingas a bar or rod to receive the poise or poises, which rest on a shortarm or poiseholder exactly opposite the end of the beam, but leaving aspace for the free movement of 2 the beam itselfin the trig-loop, andnot allowin g the poises to be taken oft.

The end of the beam beyond the trig-loop is notched and marked decimallyin numbers-- say from 10 up-as may be desired, and the poises may becorrespondingly marked to set on corresponding numbers by being slidfrom the holder onto the end of the beam, thus increasing the capacityof the beam and preventing the poises being lost, all as hereinafter ex-5 plained.

In the drawing the figure is a side elevation of the device.

A represents the beam, with a single line of figures thereon, from 0 to10, though it may 40 be numbered up to any desired amount.

On the beam is a single sliding poise, a, which, on being moved to theend of the beam, will give the weighing capacity of the beam say tenpounds-as shown. To get a greatly- 5 increased capacity from this singlebeam I extend theend of the beam beyond the trigloop 6, as shown at A,and number it first with, say, 10, the next being 20, and so on.Opposite the end of this extension, but leaving a small space between,is set a short arm, I),

upheld by an upright short standard, 0, at-

tached to the end of the cap B. On this slide one, two, or more poises,(l d, all differently weighted, and marked, if desired, in numbers tocorrespond with those in the end of the beam, and arranged so that theone nearest the end must be slid onto the end ofthebeam and next thetrig-loop to set in the notch to indicate-10, which, added to the 10 onthe beam proper when the poise a. is set on 10 therein, gives a total oftwenty pounds. Of course this supplementary poise is not used until thecapacity of the beam proper has been exhausted by the poise a. If thecommodity weighs over twenty pounds, then the next poise, d, is slidonto the 20 mark and the poise a is set at the balancing-figure on thebeam, which indicates the weight over twenty pounds and up to thirtypounds, if the com modity weighs so much, the capacity of the beam beingthirty pounds, as shown in the drawing.

The space between the extension end of the beam proper and thepoise-holding arm is so small as to prevent the withdrawal of the poisestherefrom, and thus prevents their being lost or the wrong one used, asthey have to be moved in their consecutive order as they stand on thearm A.

Each supplementary poise is differently 8o weighted, decreasing inweight or size as it is to be set nearer to the end of theextensionbeam; but each is marked in higher figures as it decreases insize or increases its distance from the trig-loop.

I claim The single beam A, elongated beyond and extending through thetrig-loop, forming a longitudinal counter-poise, A, and in combinationwith a poise-holding arm set exactly op- 0 posite thereto, having apoise or series of poises differently weighted thereon to slide on andoff said arm A, substantially as and for the purpose specified.

In witness whereof I have hereunto signed 5 my name in the presence oftwo subscribing witnesses.

O. H. BIDWELL.

Witnesses:

J. R. DRAKE, A. A. HOUGHTON.

